American Music Awards 2013

Taylor Swift announces the award for favorite male artist - pop/rock at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Ian Axel, left, of A Great Big World performs on stage with Christina Aguilera at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Avicii accepts the award for favorite artist - electronic dance music at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

From right, T-Boz and Chilli of the musical group TLC pose with Lil Mama backstage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Invision

Luke Bryan performs on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Lady Gaga, foreground, and R. Kelly perform at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Chilli, foreground from right, and T-Boz of the musical group TLC perform with Lil Mama on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Tyler Hubbard, left, and Brian Kelley, right, of the musical group Florida Georgia Line, pose backstage with Nelly and the award for single of the year for "Cruise" at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Invision

Justin Timberlake poses backstage with his awards for favorite male artist - pop/rock, favorite male artist - soul/R&B, and favorite album - soul/R&B for "The 20/20 Experience" at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Invision

Maksim Chmerkovskiy, seen standing, performs with Jennifer Lopez at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Justin Timberlake, center, performs on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Marc Anthony accepts the award for favorite artist - Latin at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Pitbull, left, and Ke$ha perform at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Ke$ha, center, performs at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Liam Payne, left, and Harry Styles of the musical group One Direction perform on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Tyler Hubbard, left, and Brian Kelley of the musical group Florida Georgia Line perform on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Dan Reynolds of the musical group Imagine Dragons performs on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Taylor Swift accepts the award for favorite album - country for "Red" at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

Invision

Katy Perry performs on stage at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)